Sand discharging apparatus for vehicles



Dec. 8, 1936. 2,063,395 LOUIS-EUGENE-WIDOLT MONTROSE-OSTER I SANDDISCHARG ING APPARATUS FOR VEHICLES Oiiginal Filed Dec. 15, 1950 awe/MMPatented Dec. 8, 1936 UNITED" STATES PATENT OFFICE- aosases I SANDnrscrmnenve APPARATUS FOR- e VEHICLES Louis-Eugene-WidoltMontrose-Oster, 'Karlsbad, i Czechoslovakia original applicationDecember 1-5, 1936,, Serial 111N115 502,535. Divided and thisapplication fMarchlfi, 1934, Serial No. 715,893.!11 Ger- ."inanyDecember 16, 1929 g' claims. (01. 291-15) This invention relatestosanddischargingiapparatusfor vehicles, and constitutes a divisionoi thesubject matter disclosed in my copending ap-# plication for patent onMultiple unit control I system, Serial No. 502,535, filed December 15,

1930. It is the primary object and purpose of the present invention toprovide simple and positively operating means which maybe automaticallyactuated in the application orme vehicle wheel brakes, o'r independentlythereof', forithe purpose of intermittently ..-discha front of theforward true wheel 'theveliicle bringthe vemcie toj stop:

More particularly; the;

sentgiinvention has;

1 far its object ,tofp'rovide' combination with' a vehicle equippedwithbrake control means, elec v ensue actuated sand. discharging... devicesI mounted ad'jacent to .the truck wheels and means rendered effective ina certain definite position of a part of thewbrake controlling means forclosing an electrical'ener'gizing circuit for the actuating means forcertain of said sand dis- '5 charging devices in accordance with thedirec-' tion of travel of the vehicle;

It is a further generalobject of the invention to provide apparatus asabove characterized, which consists of relatively few parts of simple I)construction, and which is particularly designed for application tomotor driven vehicles at comparatively small cost, to function in apositive and reliable manner.

. With the above and other objects in view, the ll. invention consistsin the improved sand discharging apparatus for vehicles, and in theform,

construction and relative arrangement of the several parts thereof aswill be hereinafter more fully described, illustrated in theaccompanying 4O drawing, and subsequently incorporatedin the subjoinedclaims.

In the drawing, which illustrates one simple and practical embodiment ofthe invention, the

, figure diagrammatically illustrates the arrange-v 4B ment of the sanddischarging devices relative to the truck wheels of the vehicle,together with the essentialcircuit connections between the aetuatingmeans therefor, the circuit controlling switches and the source ofcurrent.

50 r In the multiple unit control system for motor vehicles disclosedinmy pending application above referred to, there is provided on each,motor vehicle'a main controller for supplying current from an overheadfeed line to the motors,

55 an operating unit therefor and a starting switch sand-in;

which controls the supply 01 energy by said unit for the operation ofsaid controller. However,

, these several units have no essential relation to the subject matterof; the invention herein .K and K. -"Thes'e reversing switches, incertain- 0 positions thereon. control the transmission of currentovensthe transmission lines Pa and Se- I V betweentheseveral"motorvehicles'to govern the in order-to obtain better Itractionforto.quicklyoperation of the main controllers. Since this, however,'ccnstitutes thesubject matter of an- 1 other copending application for patent, it willnot be further referred to herein.

: 'I'he levers K or K, hen moved to certain selected positions, effectthe operation of relays for positions also",- through the medium ofhydraulicallyactuatedmechanism, such as shown in the application aboveidentified, or other suitable means, govern the operation of the brakecontrol drum E.

In so far as my present invention is concerned, the brake controllingmeans might be of various kinds, and means either common'with theoperators control means for the current supply 'controller of thevehicle motors or independent thereof, might be provided for governingthe operation of the brake control means. It is therefore to beunderstood that no claim is herein made to the particular features abovereferred to.

In the diagram, the vehicle drive motors (not shown) are arranged inpairs or groups with the usual armature and, field connections betweensaid motors and the interconnecting current conductors between thecontacts of the reversing switches F and F. Adjacent to each truck wheeldrivenby these motors, the sand reversing hoppers indicated at 289, 289respectively are suitably mounted, each of said hoppers at its lower endbeing provided with a reciprocal 5 discharge control valve 290, 290'respectively,

having a part 29|, 29|' downwardly inclined When the magnet coils aredeenergized, said valves are returned to their normal closed positionsby the springs 292, 292' respectively. The magnet coils 296, 291, forone pair of sand discharging devices, are connected by wires 298, 298with the coils of the other pair of said devices, while wires 295, 295'connect the respective pairs of magnet coils with contacts 294, 299

of the reversing switches F and F respectively,

said contacts being engaged by the circuit closing segments 293, 293'respectively of the said switches.

The control drum E for the brake mechanism carries a circuit closingsegment 82 which, in one position of the control drum, bridges thecontacts 236 and 237 and thereby closes the circuit from the trolleyline I through'pole -2, connections 3, -5' and a series resistance 300to the intermittent relay or interrupter 299, and thence throughconnections 299 and 298' to the magnet coils of the several sanddischarging devices. Thus, these coils are energized through theconnections with the switch-F or F above described and moved to openpositions. The deenergization of said coils by the intermittent relay orinterrupter 299 results in a constant reciprocating motion of the valves299,290, said valves being returned to normal closed position by thesprings 292, 292' each time the circuit is broken. Thus there is anintermittent discharge of the sand from the several hoppers which issprayed in advance of the front truck wheels of the vehicle. Since, asexplained in my copending application for patent, through the medium ofmy novel multiple unit control system, when the operator's lever K, K inone vehicle is actuated to so move the brake control drum E to theposition closing the circuit through contacts 236, 231, the brakecontrol drum on every other vehicle in the train will be correspondinglyoperated to the same position, so that without the actuation of separatemanually controlled means on each vehicle, sand will be properlydischarged in front of the truck wheels of all vehicles in the train. Ofcourse, it is understood that for travel in each direction, only one ofthe reversing switches is in position closing the circuit with thecontact 294, 294' thereof respectively, so that the discharge of sandtakes place only from two of the sand hoppers 289, 289' mounted inadvance of the forward truck wheels.

In some instances during travel of the train, it may be necessary todischarge the sand in order to secure better traction without desiringto apply the brakes, and therefore, I provide the manually operableswitches L, L arranged at opposite ends of the vehicle which may beeither foot or hand operated to close the control circuit for the sanddischarging valve actuating devices independently of the brake controldrum E.

From the foregoing description considered in connection with theaccompanying drawing, the construction, manner of operation and severaladvantages of the present invention will be clearly understood. It willbe seen that I have devised very simple means which is positive andreliable in its operation for effecting the economical discharge of thesand before the front truck wheels of the vehicle, so as to either aidin bringing the vehicle to a quick stop or for the purpose of obtainingbetter traction. It will be evident that in view of the simplicity ofthe device, it may be manufactured and applied to motor driven vehiclesnow in general use at comparatively small cost. I have herein disclosedwhat I believe to be a very practical embodirnent of my presentimprovements. Nevertheless, it is to be understood that the same may besusceptible of various modifications in the form, proportion andrelative arrangements of its several parts, and I accordingly reservethe privilege of resorting to all such legitimate changes therein as maybe fairly embodied within the spirit and scope of the invention asclaimed.

I claim:

1. In combination with a vehicle having front and rear wheel trucks, amovable brake controlling member, vehicle direction controlinstrumentalities, normally closed sand discharge devices associatedwith the front wheels of the vehicle in both directions of travel,electromechanical means for actuating said devices to open position,control circuits therefor, said vehicle direction controlinstrumentalities including separate pairs of contacts in each saidcontrol circuit operable respectively to circuit closing position inresponse to operation of the respective direction controllinginstrumentalitles for completing the control circuit to saidelectromechanical means associated with the front wheel of therespective trucks in accordance with the direction of travel of thevehicle, and means rendered effective in a definite predeterminedposition of said movable brake controlling member for closing thatcontrol circuit in which the contacts of a vehicle direction controlinstrumentality have been closed whereby to effect discharge of sand inaccordance with existing direction of travel.

2. In combination with a vehicle having front and rear wheel trucks, amovable brake controlling member, vehicle direction controlinstrumentalities, normally closed sand discharge devices associatedwith the front wheels of the vehicle in both directions of travel,electromechanical means for actuating said devices to open position,control circuits therefor, said vehicle direction controlinstrumentalities including separate pairs of contacts in each saidcontrol circuit operable respectively to circuit closing position inresponse to operation of the respective direction controllinginstrumentalities for completing the control circuit to saidelectromechanical means associated with the front wheel of therespective trucks in accordance with the direction of travel of thevehicle, switch means rendered effective in a definite predeterminedposition of said movable brake controlling memher for closing thatcontrol circuit in which the contacts of a vehicle direction controlinstrumentality have been closed whereby to effect discharge of sand inaccordance with existing direction of travel, and manually controlledswitches connected to the respective control circuits in parallel withthe last-mentioned switch means, said manually controlled switches beinglocated one at each end of the vehicle and operable to cause actuationof the respective electromechanical means independently of the operationof said movable brake controlling member.

LOUIS-EUGENE-WIDOLT MONTROSE-OSTER.

